Hydraulic motor



(No Model.)

W. W. WOODBURN. HYDRAULIC MOTOR.

No. 307,418. Patented 001;. 28, 1884.

Unwrap Erm ne PATENT FFECEO VILLIAM XV. VOODBURN, OF 'WILFIS, TEXAS.

HYDRAU'LlC MOTOR.

ESZ ECEEIOATIQN forming part of Letters Patent No. 30?,t18, dated October 28, 1884.

Application filed May 6, 1884. (No model.) 7

To (all whom it may concern.-

Be it known that 1, WILLIAM XV. Wool)- BURN, of Villis, in the county of Montgomery and State of Texas, have invented certain new and useful Improvements in Hydraulic Motors 5 and I dohereby declare that the following is a full, clear, and exact description of the invention, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form part of this specification.

My invention relates to that class of devices known as hydraulic motors; and it consists, broadly, in alternately directing a moving colnn'in of water or like fluid into two cylinders placed side by side, and containing workingpistons united at their outer ends to crankarms connecting with the powershaft and with a cam-wheel operating the cut-off mechanism.

My invention also consists in certain details of construction hereinafter described, and particularly pointed out in the claims.

Referring to the drawings forming a part of this specification, and to the designating-letters marked thereon, Figure 1 represents a plan view of my invention, partly in section. Fig. 2 represents alike view of the same at a difl'erent period of the stroke. Fig. 8 repre sents a longitudinal section of the cylinders, cut-oft, and exhaust-chamber at a still different period of the stroke, the piston-rods being shown in plan and partly broken away. Fig. 4 represents an end view of the cover of the cxhaust-chamber. Fig. 5 represents, on an enlarged scale, a side elevation of the camwheel.

In the several figures like letters indicate like parts.

A represents a pipe or conduit for conveying the motive fluid. This pipe is provided with a flange by which it is rigidly bolted or otherwise attached to the end of a cylinder, 0. The pipe A has a flaring end, D, of partially-circular contour, forming with the out wardly-rounded corresponding end of the cutoff pipe B a knuckle-joint, permitting an oscillating motion of the other extremity of said pipe. A pivot, Y, prevents the pipe B from crowding upon the inlet-pipe or upon the top of the cylinders. The chamber 0 is mounted upon the dished or concave head of the twin cylinders K K, and is provided with basal slots V V, through which play the opposite sides of the pipeflange S. The chamher is provided with outflow or exhaust openings T T.

To the sides of the cylinders K K are attached the arms E E, supporting in suitable bearings the horizontal portions of two opposite crank-arms, X X, rigidly united at diametrically opposite points on the periphery of a wheel, N. The diameter of the wheel N is equal to the length of stroke of the pistons. The piston rods H H, provided with ing between the guiderods G G attached to the arms or frame E E and a central longitudinal bar, M, connecting -rods F F, unite the piston-rod with the crank-arms,as shown.

To the upper side of the bar M is pivoted, at O, a lever, L, one end of which is pivoted to a fixed collar, W, upon the cut off B, and the other end of which plays in a cam-groove cut in the periphery of the wheel N.

The parts being disposed as described, the operation of my invention is as follows: The water or other fluid entering at A (the pipeB being in the position shown in Fig. 1) is directed into the cylinder K above the pistonhead in such cylinder. It causes the piston, therefore,to recede, and with it the piston-rod H and connecting-rod F, the collar 1 sliding between the guides G and M. The movement of the connecting-rod F revolves the compound crank-arm 1% within its bearings, causingalike revolution of the cam-wheel Ntoward the cylinders K K. During the greater part of this movement the free end of the cut-off lever L travels along that part of the cam-groove which is nearest and parallel to the outer edge of the wheel N. lVhen the piston begins to approach the end ofits stroke, the free endofthelever enters the diagonal cross-groove leading to the straight groove on the other side of the wheel. The lever accordingly turns upon the pivot I), and that end whichis attached to the collar WV moves toward the cylinder K. The cut off or main valve B accordingly moves with it,

turning upon the pivot Y and knuckle-j oi nt 1),

notched collars 1 2, which serve as guides playis situated'directly in front of the open end of the cylinder K. The motive current is accordingly diverted from cylinder K to cylinder K, and is directed upon the piston-head in the latter cylinder, which in the meantime has advanced. from the position shown in Fig. 1 to that shown in Fig. 2. The fly wheelQ enables the cut-off to pass the dead-point between the two cylinders without sensible diminution of speed. The free end of the lever enters the straight groove on the opposite side of the wheel N j ust as the pipe 13 comes in line with the cylinder K. The pistonof the latter, its piston-rod F, and connecting-rod E are accordingly driven outwardly, and a sec ond half revolution in the same direction as before is given to the wheel N and the powershaft through the medium of the crank B. At each succeeding half-revolution the cutoff is oscillated from one cylinder to the other, and consequently a continuous rotary motion is imparted to the power-shaft, irregularities in the motion being equalized and dead-points overcome by the fiy-wheel Q, or if the cranks are arranged at right angles to each other the engine will overcome the dead reenters itself. The motion may be transmitted to the point of use by means of a band adapted to fit over the fly-wheel. The pivot Y may, if desired, be dispensed with but I prefer to use it for the reason hereinbefore set forth.

Instead of pivoting the lever L to the collar W, the latter may be looseand the lever L rigidly attached to it.

I have described my engine as in a horizontal plane. It may, however, be vertically superposed upon astructure, Figs. 1 and 2 being in each case elevations of the same. The liquid contained in each cylinder at the end of their respective strokes is expelled during thesucceedingreturn-stroke through the portholes T T into a convenient discharge pipe connected with the latter.

WVhere the engine is used in the open air in mill-work and the like, the chamber Omay be entirely dispensed with, and in its place four or more bracerods, e,conneeting the cylinders K K with the inletpipe A, may be substituted,

the exhaust-outflow escaping directly upon the ground or in the stream.

It is evident that by suitable provision a machine constructed on the principle of my liquid motor may be advantageously employed with any aeriform fluidsuch as steam, gas, air, ammonia, and the like. It would be necessary in such case to add suitable stuffingboxes, packing, and the like, as is well understood. For the same power, moreover, alesser diameter for such fluids would be necessary than for hydraulic purposes.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, 1s

1. In a motor, the combination, with'the supply pipe, of the double -acting cylinders and the oscillating cut-oft or valve, the latter being connected with the cylinder-pistons by intermediatecam mechanism, substantially as described.

2. In a motor, the combination, with the supply-pipe, of an oscillating cut-off or valve, twin cylinders provided with double acting pistons connected with and operating two crank-shafts, agrooved cam-wheel, and a pivoted cam-lever loosely connected at one eX- tremity to the end of the cutoff and its free extremity playing in the cam-groove, substantially as described.

3. In a motor, the combination, with the cylinders and the main supply-pipe, of the automatic cutoff or valve described, consisting of a pipe-section connected with the cylinders by a sliding joint and with the supplypipe by a knuckle joint, substantially as set forth.

4. The combination, with the supply-pipe, the double acting cylinders having dished or concaved heads, and the oscillating cutoff having curved basal flange, of intermediate valve mechanism connected with the cylinderpistons, substantially as and for the purpose set orth.

In testimony that I claim the foregoing as my own I affix my signature in presence of two witnesses.

IVILLIAM IV. XVOODBURN. lVitnesses:

O. E. DUFFY, F. O. McOLEARY. 

